﻿using Nop.Core.Domain.Catalog;
using Nop.Core.Domain.Customers;
using Nop.Core.Domain.Directory;
using Nop.Core.Domain.Discounts;
using Nop.Core.Domain.Stores;

namespace Nop.Services.Catalog;

/// <summary>
/// Price calculation service
/// </summary>
public partial interface IPriceCalculationService
{
    /// <summary>
    /// Gets the final price
    /// </summary>
    /// <param name="product">Product</param>
    /// <param name="customer">The customer</param>
    /// <param name="store">Store</param>
    /// <param name="additionalCharge">Additional charge</param>
    /// <param name="includeDiscounts">A value indicating whether include discounts or not for final price computation</param>
    /// <param name="quantity">Shopping cart item quantity</param>
    /// <returns>
    /// A task that represents the asynchronous operation
    /// The task result contains the final price without discounts, Final price, Applied discount amount, Applied discounts
    /// </returns>
    Task<(decimal priceWithoutDiscounts, decimal finalPrice, decimal appliedDiscountAmount, List<Discount> appliedDiscounts)> GetFinalPriceAsync(Product product,
        Customer customer,
        Store store,
        decimal additionalCharge = 0,
        bool includeDiscounts = true,
        int quantity = 1);

    /// <summary>
    /// Gets the final price
    /// </summary>
    /// <param name="product">Product</param>
    /// <param name="customer">The customer</param>
    /// <param name="store">Store</param>
    /// <param name="additionalCharge">Additional charge</param>
    /// <param name="includeDiscounts">A value indicating whether include discounts or not for final price computation</param>
    /// <param name="quantity">Shopping cart item quantity</param>
    /// <param name="rentalStartDate">Rental period start date (for rental products)</param>
    /// <param name="rentalEndDate">Rental period end date (for rental products)</param>
    /// <returns>
    /// A task that represents the asynchronous operation
    /// The task result contains the final price without discounts, Final price, Applied discount amount, Applied discounts
    /// </returns>
    Task<(decimal priceWithoutDiscounts, decimal finalPrice, decimal appliedDiscountAmount, List<Discount> appliedDiscounts)> GetFinalPriceAsync(Product product,
        Customer customer,
        Store store,
        decimal additionalCharge,
        bool includeDiscounts,
        int quantity,
        DateTime? rentalStartDate,
        DateTime? rentalEndDate);

    /// <summary>
    /// Gets the final price
    /// </summary>
    /// <param name="product">Product</param>
    /// <param name="customer">The customer</param>
    /// <param name="store">Store</param>
    /// <param name="overriddenProductPrice">Overridden product price. If specified, then it'll be used instead of a product price. For example, used with product attribute combinations</param>
    /// <param name="additionalCharge">Additional charge</param>
    /// <param name="includeDiscounts">A value indicating whether include discounts or not for final price computation</param>
    /// <param name="quantity">Shopping cart item quantity</param>
    /// <param name="rentalStartDate">Rental period start date (for rental products)</param>
    /// <param name="rentalEndDate">Rental period end date (for rental products)</param>
    /// <returns>
    /// A task that represents the asynchronous operation
    /// The task result contains the final price without discounts, Final price, Applied discount amount, Applied discounts
    /// </returns>
    Task<(decimal priceWithoutDiscounts, decimal finalPrice, decimal appliedDiscountAmount, List<Discount> appliedDiscounts)> GetFinalPriceAsync(Product product,
        Customer customer,
        Store store,
        decimal? overriddenProductPrice,
        decimal additionalCharge,
        bool includeDiscounts,
        int quantity,
        DateTime? rentalStartDate,
        DateTime? rentalEndDate);

    /// <summary>
    /// Gets the product cost (one item)
    /// </summary>
    /// <param name="product">Product</param>
    /// <param name="attributesXml">Shopping cart item attributes in XML</param>
    /// <returns>
    /// A task that represents the asynchronous operation
    /// The task result contains the product cost (one item)
    /// </returns>
    Task<decimal> GetProductCostAsync(Product product, string attributesXml);

    /// <summary>
    /// Get a price adjustment of a product attribute value
    /// </summary>
    /// <param name="product">Product</param>
    /// <param name="value">Product attribute value</param>
    /// <param name="customer">Customer</param>
    /// <param name="store">Store</param>
    /// <param name="productPrice">Product price (null for using the base product price)</param>
    /// <param name="quantity">Shopping cart item quantity</param>
    /// <returns>
    /// A task that represents the asynchronous operation
    /// The task result contains the price adjustment
    /// </returns>
    Task<decimal> GetProductAttributeValuePriceAdjustmentAsync(Product product,
        ProductAttributeValue value,
        Customer customer,
        Store store,
        decimal? productPrice = null,
        int quantity = 1);

    /// <summary>
    /// Round a product or order total for the currency
    /// </summary>
    /// <param name="value">Value to round</param>
    /// <param name="currency">Currency; pass null to use the primary store currency</param>
    /// <returns>
    /// A task that represents the asynchronous operation
    /// The task result contains the rounded value
    /// </returns>
    Task<decimal> RoundPriceAsync(decimal value, Currency currency = null);

    /// <summary>
    /// Round
    /// </summary>
    /// <param name="value">Value to round</param>
    /// <param name="roundingType">The rounding type</param>
    /// <returns>Rounded value</returns>
    decimal Round(decimal value, RoundingType roundingType);
}